LED in Relay circuit

Status
Not open for further replies.

venkates2218

Full Member level 6
Joined
Sep 30, 2016
Messages
354
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,298
Activity points
4,306


This is the relay circuit,which I using in my project.
Is this LED(LD2) connection in this circuit is correct or have to invert the LED.
By present circuit,is there any possible for flow of GND to relay coil point by placing the LED this this..?
 

Hi,

is there any possible for flow of GND to relay coil point
The only way to GND is via the BJT. The LED also get's it's GND via the BJT.
Thus it's not possible that the LED causes any GND current for the relay coil.

You may easily check this on your own by using a (colored) pen.
--> You wiil not find a path from VCC via relay_coil and LED to GND

Klaus
 

Status
Not open for further replies.
Cookies are required to use this site. You must accept them to continue using the site. Learn more…